Query latest values from prometheus metrics and import them as as sensors into home assistant.
Contributions welcome!
Tested with Home Assistant 2021.12.10.
- Migrate to
DataUpdateCoordinator
(https://developers.home-assistant.io/docs/integration_fetching_data/)
sensor:
- platform: prometheus_query
url: http://localhost:9090
queries:
- name: Energy usage
expr: energy_usage_wh / 1000
unit_of_measurement: kWh
device_class: energy
state_class: total_increasing
- name: Energy solar production
expr: energy_solar_wh / 1000
unit_of_measurement: kWh
device_class: energy
state_class: total_increasing
- name: Energy grid consumption
unit_of_measurement: kWh
expr: energy_grid_wh / 1000
device_class: energy
state_class: total_increasing
I tried to get this component merged into home-assistant in 2020/12.
That effort failed when the requirement to create a third party library to handle the interaction with the Prometheus API came up.
The code is using async aiohttp calls and reuses the home-assistant
internal aiohttp client session.
At the time I did not find a ready to use async prometheus client
library, and the search for one wasn't easy due to the term client
being overloaded in the Prometheus world.
I was also not going to start maintaining such a library, when the
class to wrap the Prometheus instant query API was a mere 36 LoC.
Everyone is welcome to pick up this effort!